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Engine Mechanical TopicsDiscussion for motor builds, cams, head work, stripped bolts and other engine related issues. The good and the bad. If it goes round and around or up and down, post it here.
Ill be the first to own my (many) mistakes. I went ahead and pulled the rear cylinder down. Figured If I made one mistake better off checking to see if I made it twice.
The rear head bolts took quite a bit more effort to break loose. Nothing excessive but noticeable.
The rear head studs were indeed oiled, fronts are bone dry.
Fresh gasket kit being delivered tomorrow. Up next I need to clean and inspect the cylinder and cylinder head.
I will update with decent daylight photos in a few days.
Yet again I am amazed at the knowledge shared here. In my personal experience just be humble,polite and respectful and this community will help.
Nobody wants to help a jerk.
Ill be around here for a long time and look forward gaining enough experience to help some neophyte in the future.
As mentioned, check the studs. And if it were mine, I'd use new head bolts and follow the procedure outlined previously.
You might even thread the head bolts on the studs by hand before assemble to be sure they thread smoothly so you get the full clamping force from the torqued fasteners.
Ill be the first to own my (many) mistakes. I went ahead and pulled the rear cylinder down. Figured If I made one mistake better off checking to see if I made it twice.
The rear head bolts took quite a bit more effort to break loose. Nothing excessive but noticeable.
The rear head studs were indeed oiled, fronts are bone dry.
Fresh gasket kit being delivered tomorrow. Up next I need to clean and inspect the cylinder and cylinder head.
I will update with decent daylight photos in a few days.
Yet again I am amazed at the knowledge shared here. In my personal experience just be humble,polite and respectful and this community will help.
Nobody wants to help a jerk.
Ill be around here for a long time and look forward gaining enough experience to help some neophyte in the future.
I think I would be checking cyliner and head deck surfaces for true flat as was suggested earlier in #10. JMHO but I doubt that dry stud threads caused the blow out. It would be unfortunate to put it back together without checking and have another blow out..
I agree with DJL. How were the other studs on the same cylinder? The blown HG may have been blown for a while heating the stud. What do the nuts look like?
Interested in seeing what caused this, Don't think it was the cylinder or cylinder head not being trued (flat). The OP stated they were swap kits from Fuel Moto.. I don't see them missing that part of the machining.. If in doubt you can talk to Jamie, I'm sure he'd take a good look at them.. As stated check cylinder studs and when the assembled take a compression test.. by the way does any one think 13 miles on the Dyno is a lot for not having it tuned yet??
I don't think that's much of a breakin before romping on it, and looks like half the 13 was with a severely leaking head gasket.
The results you see in that gasket will happen in a matter of seconds once it begins to leak. The Dealership he was at, is very good and there dyno guy is at the top of the pile when it comes to knowing what to do. You just need to get a straight edge and lay it across the surfaces for a start when checking.
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Stupid!
